van buren



J. S. VAN BUREN.

Portable Furnace. I

Patented Oct. 26,1869.

U 7/1/11 "Ill/J N. PETERS PHOTOJJTHOGRAFHER, WASHINGTON, D C.

dubbed sane itstent Gtflflirr.

Letters Patent No. 96,289, dated October 26, 1869.

SUMMER-FURNACE.

The Schedule referred to in these Letters Patent and making part of the same To all whom it may concern:

Be it known that I, J. S. VAN BUREN, of Green Island, in the county of Albany, and State of New York, have invented a new and valuable Improvement in Summer-Furnaces; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being bad to the annexed-drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

Figure 1, of the drawings, is a representation of my invention in central vertical section.

Figure 2 is a horizontal section of same, taken below the grate.

My invention relates to sunnner-furnaces, and consists mainly in the construction and novel arrangement of devices, whereby such a furnace can be readily adjusted to the top of an ordinary cooking-stove, or, if so desired, used independently.

The letter A, of the drawings, designates outer cylinder of the furnace, which is of sheet-iron.

The letter B, an inner cylinder, of smaller size, connected to the cast-iron bottom G of the-furnace, but having its upper edge free, and some two inches below the upper plate D of the furnace.

The smaller cylinder B is tangential to the cylinder A, being attached to it in front.

Within the cylinder B is placed a circular grate, I), supported by three cars, If I), riveted to the side of the cylinder.

The-furnace is open in front below the grate.

This opening is closed by a door, E, having a register to regulate the draught.

The upper plate D is of cast-iron, having pot-hole and cover.

Theexit-pipe F, when the furnace is used with a cooking-stove, is closed by fitting on it the cap G.

When used independently, this cap is removed; and an elbow and section of ordinary pipe used to conduct off the products of combustion and to create draught.

The cast-iron bottom 0 has two openings, one within the inner cylinder, and covered by the dumpingplate H, the other between the inner and outer cylinders, extending nearly to the rods I Land bridged by three cross-bars, h h.

The dumping-plate H is pivoted between the journals i 'i, turning in the journal-seats e e, and is formed with an under lip on one side of its circumference, and an upper lip on the other side, in such a manner as to permit the plate to turn only in one direction. This dumping-plate is operated by the handle K.

The rods I I connect the upper and lower plates of the furnace, and are fastened securely by the nuts aa, screwed on their lower ends.

The operation of my furnace is as follows:

When used in connection with a cooking-stove, place the cap on the back collar F -of the furnace, and removing the cover from one of the pot-holes of the stove, place the furnace thereon. The draught-damper of the stove is now closed, and the back damper opened. The furnace-door is opened, and the cover. being removed from its top, a fire iskindled on the grate I). The products of combustion are carried up over the edge of the inner cylinder B, down the revertible flue Y, formed between the cylinders A and B, into the stove, passing out through the exit-pipe of the stove into the, chimney. The ashes that accumulate under the grate, are removed by turning the dumping-plate H, which throws them down into the ash-pit of the stove.

When used independently in the yard or fire-place, the cap G is removed, and an elbow and length of pipe attached to the collar What I claim as my invention, and desire to secure by Letters Patent, is-

The summer-furnace herein described,-having diving-flue Y, dumping-plate H, and cap G, constructed and arranged to operate in connection with an ordinary cooking-stove, or independently, substantially as specified.

In testimony'that I claim the above, I have hereunto subscribed my name, in the presence of two wit- J. S. VAN BUREN. 

